Quikbench
Quikbench
Calculate how a lump sum grows over time with compound interest, at a chosen compounding frequency. Nothing here is sent anywhere; it's plain arithmetic that runs instantly as you type.
Calculate how a lump sum grows over time with compound interest, at a chosen compounding frequency.
Uses the standard compound interest formula, letting you pick how often interest compounds (annually through daily). More frequent compounding produces a slightly higher maturity amount at the same stated annual rate.
All calculations run entirely in your browser — there's no upload, no account, and no server involved at any point. Results update live as you move the sliders.
₹1,00,000 invested at 10% annual interest, compounded annually, grows to about ₹1,61,051 after 5 years and roughly ₹2,59,374 after 10 years — notice the growth isn't linear: the second five years add more (about ₹98,000) than the first five years did (about ₹61,000), purely because interest is now compounding on a larger base.
The same 10% annual rate compounded monthly rather than annually produces a slightly higher result, because interest starts earning its own interest sooner. The difference is small at low rates and short periods but becomes more noticeable at higher rates or over long horizons — always check whether you're comparing quotes using the same compounding frequency before assuming one offer is better than another.
Simple interest is calculated only on the original principal for the whole period. Compound interest is calculated on the principal plus any interest already earned, so your money grows faster the longer it compounds.
More frequent compounding (monthly or daily vs. annually) means interest is added to the principal more often, slightly increasing the final amount even at the same nominal annual rate.
Enter the same principal and tenure but try different compounding frequencies (e.g. quarterly vs. annually) as offered by different banks, to see which actually yields more at maturity.
Simple interest is calculated only on the original principal for the entire period. Compound interest is calculated on the principal plus any interest already earned, so the amount it's calculated on grows over time — which is why compound interest produces a larger total over long periods.
More frequent compounding produces a marginally higher final amount at the same nominal annual rate, since interest is added to the principal — and starts earning its own interest — sooner.
📖 Related guide: Compound Interest, Actually Explained