Percentage Calculator solves everyday percent problems: taking a percent of a number, asking what percent one value is of another, or measuring percent change.
Pick a mode, enter Value A and Value B, and calculate instead of rearranging formulas on paper during meetings or homework.
Mode labels matter. Mixing up "percent of" with "percent change" is the usual reason a result looks surprising.
What Percentage Calculator does
It offers three percent modes driven by the same A and B inputs.
- Mode selector for percent-of, percent-is, and percent-change
- Value A and Value B numeric fields
- Calculate action for the active mode
- On-page hints describing each mode
Who Percentage Calculator is for
- Students checking homework without a full spreadsheet
- Analysts validating a slide's percent change quickly
- Shoppers confirming markdowns beyond a dedicated discount tool
- Managers comparing KPIs week over week
How to use Percentage Calculator
1. Choose Mode (1: A% of B, 2: A is what % of B, 3: percent change from A to B).
2. Enter Value A and Value B.
3. Press Calculate.
4. Read the result, then switch modes if you meant a different question.
Features
- Three distinct percent workflows
- Shared A/B inputs to reduce retyping
- No login for classroom or office use
- Client-side math for private figures
- Related discount, tip, and GPA helpers
- Stable /tools/percentage-calculator/ URL
Examples
- Mode 1: 15% of 240 for a fee estimate.
- Mode 2: 18 is what percent of 60 for a quiz score.
- Mode 3: percent change from 50 to 65 for a growth slide.
- Swap A and B carefully when testing reverse questions.
Tips and limits
- For percent change, A is the starting value and B is the ending value.
- Division by zero appears when B is 0 in modes that need a base.
- Round according to your report style after calculating.
- Currency problems still need tax tools separately.
Related tools
- Discount Calculator Apply a shelf percent-off to an original price for sale totals.
- Tip Calculator Turn a tip percent into money and split across diners.
- GPA Calculator Move from raw percents to credit-weighted letter GPAs.
FAQ
Is Percentage Calculator free?
Solve percent problems on BeeForge without a fee or user account.
Are my values uploaded?
Calculations stay in the browser. Clear fields on shared machines after sensitive work.
Does it work on phones?
Yes. Select the mode first so A and B mean what you intend on a small screen.
Why is the answer different from my spreadsheet?
Confirm the mode. Percent-of and percent-change are different questions with the same labels A and B.
Can I link this from a syllabus?
Use /tools/percentage-calculator/ so students share one percent helper.