Free online tools that just work
61 fast, private tools for invoices, tax, loans, text and everyday jobs. No sign-up, no uploads: everything runs in your browser.
Results
Invoicing & business
Bill clients, price your work and get paid.
Invoice generator
Create a professional invoice in any currency and download it as a PDF.
GST invoice generator
Indian tax invoice with GSTIN, HSN/SAC, CGST + SGST or IGST, and amount in words.
Estimate & quote maker
Send a priced estimate or quotation with a validity date, then turn it into an invoice.
Receipt generator
Make a payment receipt with a PAID stamp, payment method and reference.
Freelance rate calculator
Work out the hourly and day rate you need to hit your income goal.
Tax calculators
GST, VAT and freelancer income tax, worked out line by line.
GST calculator
Add or remove GST at 5%, 18% or 40%, split into CGST + SGST or IGST.
VAT calculator
Add or remove VAT, with standard rates for 45+ countries built in.
Freelancer tax calculator (India)
Income tax for Indian freelancers under 44ADA presumptive tax, new regime.
Income tax calculator (India)
Salary tax under the new and old regimes, side by side, for FY 2026-27.
HRA calculator
HRA exemption from salary, HRA and rent, with the new 8-city metro list.
GSTIN validator
Check a GST number's format and check digit, and see its state and PAN.
Money & loans
EMI, SIP, compound interest and the real cost of currency conversion.
EMI calculator
Monthly loan EMI, total interest and a full amortisation schedule.
SIP calculator
Future value of a monthly SIP or lump sum, with annual step-up and inflation.
Compound interest calculator
Grow a deposit with daily, monthly or yearly compounding and regular top-ups.
Exchange rate markup calculator
See the hidden cost of currency conversion by PayPal, banks and payment apps.
Mortgage calculator
Monthly mortgage payment with tax, insurance, HOA and PMI, plus a full schedule.
Salary calculator
Convert pay between hourly, daily, weekly, monthly and annual, both ways.
CAGR calculator
Find compound annual growth rate, end value or years to reach a target.
Discount calculator
Sale price and savings, stacked discounts, original price and percent off.
Tip calculator
Work out the tip, the total and each person's share of the bill.
PPF calculator
PPF maturity at 7.1% for 15 years or longer, with a year-by-year table.
FD calculator
Fixed deposit maturity with quarterly compounding, payout options and TDS check.
RD calculator
Recurring deposit maturity with the quarterly compounding banks use.
Simple interest calculator
Find interest, principal, rate or time, and compare with compound interest.
SWP calculator
Monthly withdrawals from a lump sum: what's left and when it runs out.
NPS calculator
NPS corpus at retirement, lump sum, annuity and estimated monthly pension.
Gratuity calculator
Gratuity under the new Labour Codes, including fixed-term pro rata and tax.
Solar plant income calculator
Units, monthly revenue, 25-year income and payback for a 1 MW or 5 MW solar plant in India.
Health & fitness
BMI, daily calories and body measurements, with the formulas shown.
BMI calculator
Body mass index with the WHO category, Asian cut-offs and healthy weight range.
Calorie calculator
Daily calories to maintain, lose or gain weight, using Mifflin–St Jeor.
Pregnancy due date calculator
Estimated due date, weeks pregnant, trimester and key pregnancy dates.
Ovulation calculator
Estimate ovulation, fertile window and next periods for three cycles.
Body fat calculator
Body fat percentage by the US Navy tape method, with fat and lean mass.
Text & code
Count, convert, encode and tidy up text, JSON and data.
Word counter
Count words, characters, sentences and reading time as you type.
Case converter
Change text to UPPER, lower, Title Case, camelCase, snake_case and more.
JSON formatter
Beautify, minify and validate JSON, with the exact line of any error.
Base64 encoder and decoder
Encode text or files to Base64 and decode it back, with URL-safe mode.
URL encoder and decoder
Percent-encode or decode URLs and query strings, and split a URL into parts.
UUID generator
Generate UUID v4 or time-ordered v7 in bulk, and inspect any UUID.
Hash generator
MD5, SHA-1, SHA-256 and SHA-512 hashes of text or files, with checksum compare.
Number to words converter
Write any amount in words, in lakh/crore or million style, for cheques.
Lorem ipsum generator
Placeholder text by paragraphs, sentences or words, as plain text or HTML.
Typing speed test
Test your typing speed in WPM and accuracy, on desktop or phone.
Text to speech
Read any text aloud with your device's voices, speed and pitch.
Text diff checker
Compare two texts and see added, removed and changed lines and words.
Everyday utilities
QR codes, passwords, dates, ages and images.
Percentage calculator
What is X% of Y, percentage change, and X as a percent of Y.
QR code generator
Make QR codes for links, Wi-Fi, contacts, email and SMS. PNG or SVG.
UPI QR code generator
Make a UPI payment QR with your UPI ID, name and optional fixed amount.
Password generator
Strong random passwords and passphrases, made with secure randomness in your browser.
Age calculator
Exact age in years, months and days, plus your next birthday countdown.
Date calculator
Count days between two dates, or add and subtract days, months or years.
Image compressor
Shrink JPEG, PNG and WebP images in your browser. Nothing is uploaded.
Unit converter
Convert length, weight, temperature, volume, area, data, lakh and crore.
Time zone converter
Convert a time across world time zones and find shared working hours.
Random number generator
Fair random numbers, giveaway winner picker, coin flips and dice rolls.
Colour converter
Convert HEX, RGB, HSL and HSV, and check WCAG contrast between two colours.
Scientific calculator
Trig, logs, powers, roots and factorials, with history, memory and keyboard input.
Roman numeral converter
Numbers to Roman numerals and back, 1 to 3999, with the breakdown.
Online timer
Countdown timer, stopwatch with laps and Pomodoro timer, with an alarm.
JPG to PDF
Combine JPG, PNG or WebP images into one PDF, in your browser.
Image resizer
Resize photos by pixels, percent or to a file size like 20 KB.
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Freelancing from India for clients abroad? easylancing handles export invoices, the monthly RBI EDF and GST records for Indian freelancers paid from abroad. Free to start.
Visit easylancing.in →Why another tools site?
Most free tool sites make you sign up before you can download, stamp a watermark on your invoice, or send your text to a server you know nothing about. FreeTools99 does none of that. Each tool is a single, fast page; the maths runs in your browser, and anything you save, such as your invoice details, is kept only in your browser's local storage on your own device.
Each calculator explains its formula, so you can check the numbers yourself. The tax pages state the rules they use and the date they were last checked.