By Team Edtoolkits · Calculators
Find simple interest, principal, rate or time from the other three, with time in years, months or days, step-by-step working and a comparison with compound interest.
Use the guide alongside the working tool.
Open Simple Interest Calculator →Pick the exam and document
Choose what to find: interest, principal, rate or time.
Frame and clean up
Enter the other values; time can be in years, months or days.
Create and check
Read the answer with each step of the SI = P × R × T ÷ 100 working, the amount, and the compound interest for comparison. Copy the working.
Privacy and limits
Days are counted over a 365-day year. Banks and lenders may use 360 days or compound interest instead; for deposits that compound, use the FD & RD Calculator.
Ready to apply this workflow?
Try Simple Interest Calculator →Explore a related workflow
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Keep your original files and review the result. Found unclear instructions? Contact Team Edtoolkits.