Percentage calculator
percent-of: a% of b | what-percent: a is what % of b | change: % change from a to b | increase: b increased by a% | decrease: b decreased by a%
Result
About Percentage calculator
Percentage calculator is a free online calculator tool. percent-of: a% of b | what-percent: a is what % of b | change: % change from a to b | increase: b increased by a% | decrease: b decreased by a%.
Enter your input, adjust the options (mode, a and b) and run it. The result appears right next to the form, is never stored, and you can copy or save it in one click. No account is needed.
How to use Percentage calculator
- Type or paste your input into the form.
- Choose the options you need: mode, a and b.
- Press Run, or use Ctrl/⌘ + Enter.
- Copy or save the result from the panel on the right.
Percentage calculator FAQ
What does Percentage calculator do?
percent-of: a% of b | what-percent: a is what % of b | change: % change from a to b | increase: b increased by a% | decrease: b decreased by a%.
Is Percentage calculator free to use?
Yes. Percentage calculator is free, with no sign-up or account required.
Is my data safe?
Results are never stored. See our privacy policy for details.
What options does Percentage calculator have?
You can set: Mode, A and B.
More everyday calculators tools
Discount calculator
Final price after discount and optional tax.
🧮Tax / GST calculator
Add tax to a net amount, or extract it from a tax-inclusive amount. Set split=true for a CGST/SGST style half-and-half breakdown.
🧮Date difference
Years/months/days between two dates, total days and business days.
🧮Age calculator
Exact age and days until the next birthday.
🧮Time duration calculator
Add up durations written like "1d 2h 30m", "45m", "90s".
🧮Unit converter
Categories and units: length (mm, cm, m, km, in, ft, yd, mi); mass (mg, g, kg, tonne, oz, lb); volume (ml, l, m3, tsp, tbsp, floz, cup, pt, qt, gal); area (cm2, m2, ha, km2, ft2, yd2, acre, mi2); speed (m/s, km/h, mph, knot); time (ms, s, min, h, day, week); temperature (C, F, K).
See all Everyday calculators tools →
Popular on Toolsera
QR code generator
Make a QR code for text, a link, a contact card (vCard), Wi-Fi, email, SMS, phone, WhatsApp, a map location, a calendar event or a UPI payment. Download as PNG or SVG, copy or share.
🛠️JSON formatter
Pretty-print JSON, optionally sorting keys.
✍️Word, character & sentence counter
Words, characters, sentences, paragraphs, lines, reading and speaking time.
📊CSV / TSV / JSON / XML converter
Convert tabular data between CSV, TSV, JSON, XML and a Markdown table.