✨ What's New at ZeeSharp

Recently added free online tools — PDF, image, developer, calculator and more. No sign-up. No watermarks.

184

New tools (90 days)

60

Added this month

124

Added 2 months ago

Last updated: September 13, 2026

🆕

Added this month

60 tools

Income Tax Calculator

Compare income tax under the old and new regime.

Merge, split, deduplicate and clean CSV files.

Broken Link Checker

Scan any page for dead links and get every status code.

OCR – Image & PDF to Text

Extract editable text from images and scanned PDF files.

Build an ATS-friendly CV and download it as a PDF.

Barcode Generator

Create EAN, UPC, Code 128 and Code 39 barcodes.

Typing Speed Test

Measure your typing speed in WPM with live accuracy.

Video Converter & Compressor

Compress video, trim clips, make GIFs and extract audio.

One-Time Secret

Share a password via a link that self-destructs after reading.

SSL Certificate Checker

Check any site certificate, expiry date and covered domains.

Permutation and Combination Calculator

Calculate nPr and nCr with or without repetition, plus factorials and Pascal's triangle.

Integral Calculator

Find antiderivatives symbolically and evaluate definite integrals with the area under the curve shown.

Logarithm Calculator

Calculate logarithms to any base, natural logs, antilogs and exponents with change-of-base working.

Derivative Calculator

Differentiate any function symbolically with step-by-step rules, higher-order derivatives and a graph.

Fraction Calculator

Add, subtract, multiply and divide fractions with working, plus simplifying and decimal conversion.

Coordinate Geometry Calculator

Find distance, midpoint, slope and line equations between points, or triangle properties from vertices.

Volume and Surface Area Calculator

Calculate volume and surface area for ten solids including spheres, cylinders, cones and torus.

Area and Perimeter Calculator

Calculate area and perimeter for ten plane shapes with formulas and a scale diagram.

Function Grapher

Plot multiple functions on one interactive graph with zoom, pan, trace, roots and intersections.

Limit Calculator

Evaluate one-sided and two-sided limits, limits at infinity and indeterminate forms with L'Hopital's rule.

RPM to RCF Converter

Convert centrifuge RPM and RCF.

Primer Tm Calculator

Estimate primer melting temperature and GC content.

Dilution Calculator

Solve C1V1=C2V2 and plan serial dilutions.

Molarity Calculator

Calculate molarity for laboratory stock solutions.

DNA to Protein Translator

Translate DNA in six reading frames and find ORFs.

Protein MW and pI Calculator

Calculate protein molecular weight, pI and composition.

OD600 Cell Density Calculator

Estimate cell density from OD600 and plan dilutions.

DNA Sequence Analyzer

Analyze DNA sequence, GC content, composition and complements.

Cell Doubling Time Calculator

Calculate cell growth rate and doubling time.

Restriction Enzyme Site Finder

Find common restriction enzyme sites in DNA.

Spring Rate Calculator

Calculate spring rate, deflection, solid height and shear stress of a helical compression spring.

Shaft Torsion Calculator

Calculate torsional shear stress, angle of twist and minimum safe shaft diameter under torque.

Pipe Flow & Pressure Drop Calculator

Calculate pipe velocity, Reynolds number, friction factor, head loss and pressure drop.

Belt and Pulley Calculator

Calculate driven pulley RPM, speed ratio, belt length, belt speed and wrap angle.

Bolt Torque Calculator

Find tightening torque and clamp load for metric bolts by size, property class and lubrication.

Gear Ratio Calculator

Calculate gear ratio, output RPM and output torque for single or multi-stage gear trains.

Beam Deflection Calculator

Calculate maximum deflection, bending moment, shear and stress for simply supported and cantilever beams.

Speeds and Feeds Calculator

Calculate spindle RPM, feed rate and material removal rate for milling, turning and drilling.

Metal Weight Calculator

Calculate the weight of round bar, plate, sheet, pipe, angle and hex bar in steel, aluminium, brass and more.

Hydraulic Cylinder Calculator

Calculate hydraulic cylinder push and pull force, extend and retract speed, and required flow rate.

Bionic Reading Converter

Bold the opening letters of every word to help you skim and read faster. Adjustable intensity.

Word Cloud Generator

Paste text and generate a word cloud sized by frequency. Pick colours and download as PNG.

Syllable Counter

Count syllables per word and per line — built for haiku, poetry, lyrics and song writing.

Anagram Generator

Enter letters and find every word that can be made from them — great for word games and crosswords.

Palindrome Checker

Check whether a word, phrase, sentence or number is a palindrome, with the mismatch highlighted.

NATO Phonetic Alphabet Translator

Convert text into the NATO phonetic alphabet (Alpha, Bravo, Charlie) and back, with a full reference chart.

Citation Generator

Generate APA 7, MLA 9 and Chicago citations for websites, books, journal articles and videos.

Text to Binary Converter

Convert text to binary, hexadecimal, octal or decimal — and decode it back again.

ASCII Art Text Generator

Turn text into big ASCII banners for READMEs, terminals, code comments and CLI output.

Fancy Text Generator

Turn plain text into stylish Unicode fonts — bold, italic, script, bubble and more, ready to copy.

AES Text Encryptor

Encrypt or decrypt text with a password using AES-256-GCM, entirely in your browser.

Net Worth Calculator

Add up your assets and liabilities to calculate your total net worth, privately in your browser.

Schema Markup Validator

Paste JSON-LD structured data and check it for syntax errors and missing required schema.org fields.

Inflation Calculator

Estimate how inflation changes the value of money over time, with adjustable rate presets.

Debt Payoff Calculator

Compare Snowball vs Avalanche strategies to pay off multiple debts faster and save on interest.

Waist-to-Hip Ratio Calculator

Calculate your waist-to-hip ratio and see your health risk category based on WHO guidelines.

Capacitor Series/Parallel Calculator

Calculate total equivalent capacitance for capacitors in series or parallel, in pF, nF, µF or F.

Color Blindness Simulator

Upload an image and preview how it looks to people with protanopia, deuteranopia, tritanopia or achromatopsia.

Photo Collage Maker

Combine up to 6 photos into a single collage with adjustable layouts, spacing and background color.

Number to Words Converter

Convert numbers into written English words, supporting international and Indian numbering systems.

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Added 2 months ago

124 tools

Statistics Calculator

Calculate descriptive statistics and probability distributions — mean, median, mode, variance, standard deviation, normal, binomial and Poisson

New 73 days ago

Complex Number Calculator

Perform arithmetic on complex numbers in rectangular and polar form — addition, subtraction, multiplication, division, modulus, argument and powers

New 73 days ago

Sequence & Series Calculator

Generate terms, find nth term formula, compute partial sums and check convergence for arithmetic, geometric, Fibonacci, harmonic and power series

New 73 days ago

Polynomial Equation Solver

Solve quadratic, cubic and quartic polynomial equations with step-by-step working, real and complex roots, discriminant and factored form

New 73 days ago

Prime Factorization Calculator

Find prime factors of any number, check primality, calculate GCD, LCM, list primes in a range and compute Euler totient and modular arithmetic

New 73 days ago

Matrix Calculator

Add, subtract and multiply matrices; calculate determinant, inverse, transpose and rank for 2×2 to 5×5 matrices with step-by-step working

New 73 days ago

Vector Calculator

Perform 2D and 3D vector operations — addition, subtraction, dot product, cross product, magnitude, unit vector and angle between vectors

New 73 days ago

Trigonometry Calculator

Calculate all six trig functions, solve triangles with law of sines and cosines, convert angles and explore the interactive unit circle

New 73 days ago

Linear System Solver

Solve systems of 2 to 5 linear equations using Gaussian elimination with full augmented matrix and row-reduction steps shown

New 73 days ago

Numerical Integration Calculator

Compute definite integrals using Simpson Rule, Trapezoidal Rule and Midpoint Rule with step-by-step breakdown and accuracy comparison

New 73 days ago

Three-Phase Power Calculator

Calculate real power, apparent power, reactive power, line current and phase current for balanced three-phase AC systems

New 73 days ago

Power Factor Calculator

Calculate real power (kW), reactive power (kVAR), apparent power (kVA) and power factor with capacitor correction sizing

New 73 days ago

Electricity Bill Calculator

Add your appliances with wattage and daily usage hours to calculate monthly kWh consumption and electricity cost

New 73 days ago

LED Resistor Calculator

Calculate the exact current-limiting resistor value, power rating and nearest standard E12/E24 value for any LED circuit

New 73 days ago

Voltage Drop Calculator

Calculate voltage drop across any cable run by wire gauge, current and length with NEC compliance check

New 73 days ago

Ohm's Law Calculator

Enter any two electrical values (V, I, R, P) to instantly calculate the remaining two using Ohm's Law

New 73 days ago

Motor Current Calculator

Calculate full-load amps, starting current, overload relay setting and MCB size for single-phase and three-phase AC motors

New 73 days ago

RC Time Constant Calculator

Calculate RC time constant (τ), charge/discharge time, cutoff frequency and energy stored in capacitor with curve diagram

New 73 days ago

Battery Backup Calculator

Calculate UPS or inverter runtime from battery Ah and load watts, or size the battery bank for a required backup time

New 73 days ago

Sand & Aggregate Calculator

Calculate sand, aggregate and cement bags for plastering, floor screeding, brickwork mortar and plain concrete

New 73 days ago

Flooring Calculator

Calculate flooring area, quantity with wastage, packs needed and cost for hardwood, laminate, tile and vinyl

New 73 days ago

Rebar Calculator

Calculate steel reinforcement bar weight in kg and tonnes by diameter and length for multiple bar entries

New 73 days ago

Staircase Calculator

Calculate stair steps, riser height, tread depth, stringer length and total going with building code compliance check

New 73 days ago

Roof Calculator

Calculate roof area, sheets or tiles needed and materials for gable, hip, shed and flat roofs with adjustable pitch

New 73 days ago

Brick Calculator

Calculate number of bricks, mortar volume, cement bags and sand for any wall with adjustable brick size and mortar joint

New 73 days ago

Concrete Calculator

Calculate cement bags, sand and aggregate for slabs, columns, beams and footings — supports M10 to M25 mix grades

New 73 days ago

Construction Cost Estimator

Estimate residential building cost by area, grade and location with detailed breakdown of civil, finishing and MEP works

New 73 days ago

Poster Generator

Design professional posters, flyers and social media graphics with text, shapes and image layers

New 73 days ago

Phone Mockup Generator

Create App Store & Play Store screenshots inside pixel-accurate iPhone, Android or iPad frames

New 74 days ago

SERP Preview Tool

See exactly how your page looks in Google search results. Live desktop and mobile preview with title and description character counters.

New 74 days ago

Bio Link Page Builder

Create a customizable link-in-bio page with your profile, avatar and all your links. Download as a standalone HTML file. No account needed.

New 74 days ago

Schema Markup Generator

Build valid JSON-LD structured data for Article, Product, FAQ, LocalBusiness and BreadcrumbList schemas using a simple form. No coding needed.

New 74 days ago

Redirect Chain Checker

Trace the full HTTP redirect chain for any URL. See every 301, 302 and 307 hop, the final destination URL and response time per hop.

New 74 days ago

Canonical URL Checker

Enter any URL to read its canonical tag, meta robots directive, Open Graph tags and Twitter Card tags from the live page.

New 74 days ago

Email Extractor

Pull every valid, deduplicated email address out of any pasted text or HTML

New 74 days ago

Mailto Link Generator

Generate a ready-to-use mailto: link with To, CC, BCC, subject and body pre-filled

New 74 days ago

Spam Score Checker

Test an email subject line and body for spam-trigger words before you hit send

New 74 days ago

Email Blacklist Checker

Check a domain or IP against 10 major spam blacklists (DNSBL) like Spamhaus and SpamCop

New 74 days ago

SPF, DKIM & DMARC Checker

Test a domain's SPF, DKIM and DMARC email authentication records and find issues

New 74 days ago

Email Validator

Check email format, mail servers, disposable providers and role accounts — single or bulk

New 74 days ago

Free WHOIS domain lookup via RDAP — registrar, registration/expiry dates, nameservers and DNSSEC status.

Find the IPv4 and IPv6 address(es) behind any domain name, with TTL and reverse DNS lookup.

IP Location Finder

Detailed IP geolocation lookup with country, region, city, ISP, ASN, timezone and an interactive map.

Website Status Checker

Bulk-check up to 25 websites at once for HTTP status, response time, redirects and SSL validity.

Image & Video Downloader

Download any direct image or video URL with preview, no watermark, and a local download history.

Scientific Calculator

Scientific calculator with trigonometry, logarithms, exponents, roots and factorial. Degree/radian mode, memory and calculation history.

Advanced Calculator

Full-featured online calculator with parentheses, percentages, memory (M+/M-/MR/MC) and calculation history. Correct order of operations every time.

Upload any image, add draggable Impact-style captions with custom colors, and download as PNG with no watermark.

Instantly find your public IP address, approximate location, ISP, browser, operating system and connection details.

DNS Propagation Checker

Check whether your DNS changes have propagated worldwide across Google, Cloudflare, Quad9 and AdGuard DNS resolvers.

Mileage Calculator

Calculate vehicle fuel efficiency in km/litre, L/100km and miles/gallon with cost per km.

Paint Calculator

Calculate litres of paint needed for any room with door and window deductions, coats, primer and cost estimate

New 75 days ago

Electricity Appliance Calculator

Calculate electricity cost per appliance with monthly bill breakdown by device.

Grocery Budget Planner

Plan grocery shopping budget with running total, tax and per-person split.

Cooking Measurement Converter

Convert between cups, grams, ml, oz and tablespoons for 50+ common cooking ingredients.

Scale any recipe up or down for any number of servings with ingredient unit conversion.

Blood Alcohol Calculator

Calculate BAC level from drinks, weight and time. Safe-to-drive countdown for India limit.

Concrete Mix Calculator

Calculate cement bags, sand and aggregate for M10/M15/M20/M25 concrete mix.

Gold & Silver Rate Calculator

Calculate gold and silver value by weight and purity (24K/22K/18K) with making charges.

Mobile Data Usage Calculator

Estimate monthly mobile data usage based on daily YouTube, Instagram and streaming habits.

Tyre Pressure Calculator

Find correct tyre pressure for your vehicle type. PSI/Bar converter with over/under inflation check.

Rent vs Buy Calculator

Compare 20-year total cost of renting vs buying a home in India.

Carbon Footprint Calculator

Calculate personal CO2 emissions from transport, energy, diet and lifestyle.

Wire & Cable Size Calculator

Find correct electrical wire gauge for any load with voltage drop per IS 732.

New 75 days ago

Travel Time Estimator

Calculate travel time for road trips with stops. Departure planner and arrival time estimator.

Retirement Calculator

Calculate retirement corpus needed in India with monthly SIP required and SWP planning.

Fuel Cost Calculator

Calculate exact fuel cost for any road trip. Compare petrol, diesel and CNG costs.

Tile & Flooring Calculator

Calculate tiles needed, boxes to buy and total cost for any room with grout gap and wastage percentage

New 75 days ago

Household Budget Planner

Monthly family budget calculator with income, expenses, savings rate and recommendations.

Solar Panel Calculator

Calculate recommended solar system size with payback period and 25-year savings projection.

Points Table Simulator

Simulate cricket group stage points table with NRR and qualification zones

New 80 days ago

Required Run Rate Calculator

Calculate RRR, CRR, balls remaining and pressure meter for cricket run chases

New 80 days ago

Partnership Calculator

Calculate batting partnerships from wicket-fall scores with visual chart

New 80 days ago

Cricket Auction Planner

IPL auction budget planner — add players by role, track purse and team balance

New 80 days ago

Fantasy Cricket Points

Calculate Dream11/My11Circle fantasy cricket points from batting, bowling and fielding

New 80 days ago

Cricket Bowling Stats

Calculate bowling economy, average, strike rate, dot ball % and quality score

New 80 days ago

Cricket Batting Stats

Calculate batting average, strike rate, centuries, ducks and consistency score

New 80 days ago

DLS Par Score Calculator

Calculate DLS revised target and par score for rain-interrupted cricket matches

New 80 days ago

Match Target Tracker

Track cricket run chases over-by-over with live RRR, projected score and trend chart

New 80 days ago

Net Run Rate Calculator

Calculate NRR for cricket tournaments — see what you need in the next match

New 80 days ago

One rep max using 7 formulas: Epley, Brzycki, Lander, Lombardi, Mayhew, O'Conner, Wathan

New 80 days ago

VO2 Max Estimator

Estimate aerobic capacity from 1.5-mile run time or resting heart rate — 3 methods

New 80 days ago

Fitness Age Calculator

Calculate your biological fitness age from VO2 max, resting HR, BMI and activity level

New 80 days ago

Running Pace Calculator

Convert between pace (min/km), speed (km/h), distance and finish time — 4 modes

New 80 days ago

Race Finish Time Predictor

Predict 10K, half marathon and marathon times from any known race using Riegel formula

New 80 days ago

Protein for Athletes

Sport-specific daily protein targets based on weight, training intensity and goal

New 80 days ago

Sports Betting Odds Converter

Convert between fractional, decimal, American odds and implied probability — with payout calc

New 80 days ago

Cycling Power Zones

FTP-based cycling training zones using Coggan model — Z1 to Z7 with watts and W/kg

New 80 days ago

Sweat Rate Calculator

Calculate sweat rate from pre/post workout weight — fluid loss and hydration plan for athletes

New 80 days ago

Tournament Bracket Generator

Generate single-elimination brackets for 4–32 teams — click winners to advance

New 80 days ago

Macronutrient Calculator

Daily protein, carbohydrates and fat targets based on TDEE and fitness goal

New 80 days ago

Sleep Calculator

Best bedtime and wake-up times based on 90-minute sleep cycles

New 80 days ago

Heart Rate Zone Calculator

Calculate 5 heart rate training zones using the Karvonen formula

New 80 days ago

Water Intake Calculator

Daily water requirement based on weight, activity level and climate

New 80 days ago

Body Fat Calculator

Estimate body fat % using the accurate US Navy method — neck, waist, hip measurements

New 80 days ago

Ovulation Calculator

Calculate ovulation date, fertile window and next period with 3-month cycle calendar

New 80 days ago

Ideal Body Weight Calculator

Calculate ideal weight using 4 medical formulas: Devine, Robinson, Miller & Hamwi

New 80 days ago

Calorie Burn Calculator

Calories burned during 30+ activities using MET values — walking, running, cycling, yoga

New 80 days ago

Blood Pressure Checker

Check BP reading against AHA 2024 guidelines — instant classification and recommendations

New 80 days ago

Pregnancy Due Date

Calculate due date from LMP or conception — week-by-week timeline and milestones

New 80 days ago

TNEB EB Bill Calculator

Calculate your Tamil Nadu EB electricity bill for all categories — Domestic, Commercial, Industrial, Agricultural

New 80 days ago

Account Manager

Secure AES-256 encrypted password vault — store, organise and generate credentials locally

New 81 days ago

Image Border & Frame

Add solid, dashed, gradient or shadow borders and frames to any image

New 81 days ago

Aspect Ratio Calculator

Lock aspect ratio and calculate missing dimensions for images and video

New 81 days ago

Image Color Extractor

Extract dominant color palette from any image as HEX and RGB swatches

New 81 days ago

Extract clean plain text from any PDF — runs entirely in your browser

New 81 days ago

CSS Text Shadow Generator

Visual CSS text-shadow builder with multiple layers and live preview

New 81 days ago

Compress animated GIFs by reducing frames and resolution in your browser

New 81 days ago

Reverse text by character, word, sentence or line — including mirror mode

New 81 days ago

Pixel to REM Converter

Convert px to rem, em, vh and vw CSS units with a reference size table

New 81 days ago

Repeat any text N times with a custom separator — newline, comma, or custom

New 81 days ago

Markdown Table Generator

Build Markdown tables by clicking and typing — no pipe characters needed

New 81 days ago

Text Cipher / ROT13

Encode and decode with ROT13, Caesar cipher, Atbash and Base64

New 81 days ago

CSS Grid Generator

Define CSS Grid columns and rows visually — set fr, px, % and gaps

New 81 days ago

HTML to Plain Text

Strip all HTML tags and get clean readable plain text

New 81 days ago

CSS Border Radius Generator

Visually generate CSS border-radius with independent corner controls

New 81 days ago

Word Frequency Counter

Count how often each word appears — great for keyword analysis and SEO

New 81 days ago

Color Contrast Checker

Check WCAG AA/AAA accessibility contrast ratio for any two colors

New 81 days ago

Chmod Calculator

Calculate Linux file permissions — toggle checkboxes or enter octal value

New 81 days ago

Tip & Bill Splitter

Calculate tip amount and split the total bill evenly among people

New 81 days ago

Date Calculator

Find exact days between two dates or add/subtract time from any date

New 81 days ago

TOTP / 2FA Generator

Generate 6-digit authenticator codes offline — secret never leaves browser

New 81 days ago

Calorie & BMR Calculator

Calculate daily calorie needs and BMR using the Mifflin-St Jeor formula

New 81 days ago

Calculate Body Mass Index, weight category and healthy weight range

New 81 days ago

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