Finance calculators that show their math

Use transparent finance calculators with visible formulas, explicit assumptions, and reproducible results, plus practical developer and text utilities.

House, chart, and payment panel illustration for the mortgage calculator

Mortgage Calculator

Estimate monthly payment, total interest, and total loan cost for a mortgage.

Loan sheet and coin stack illustration for the loan calculator

Loan Calculator

Calculate monthly payment, total interest, and full repayment cost for fixed-rate loans.

Payment schedule table and declining bars illustration for the amortization calculator

Amortization Calculator

Generate a month-by-month amortization schedule for fixed-rate loans.

Growth curve and stacked coins illustration for the compound interest calculator

Compound Interest Calculator

Project savings and investment growth with compounding and recurring contributions.

Target and savings progress illustration for the savings goal calculator

Savings Goal Calculator

Find the recurring amount needed to reach a target savings goal.

Cash stack and golden credit card illustration for the discount vs installment calculator

Discount vs Installment Calculator

Compare a single discounted payment against interest-free installments using a break-even discount estimate.

Percent symbol and chart illustration for the percentage calculator

Percentage Calculator

Solve common percentage calculations, including increase, decrease, and percent change.

Calendar and clock illustration for the age calculator

Age Calculator

Calculate exact age in years, months, and days between dates.

Two calendars with a timeline arrow illustration for the date difference calculator

Date Difference Calculator

Measure the number of days, weeks, months, and years between two dates.

Structured JSON braces and code lines illustration for the JSON formatter

JSON Formatter

Beautify, validate, and minify JSON directly in your browser.

Encoding arrows and text panels illustration for the encoder decoder

Encoder / Decoder

Encode and decode URL text, Base64, URL-safe Base64, and HTML entities in your browser.

Text lines and count badge illustration for the word counter

Word Counter

Count words, characters, sentences, and paragraphs instantly.

Overview

Cleartali applies software-engineering discipline to consumer finance math: formulas are visible, assumptions are explicit, and results are deterministic enough to reproduce. The finance calculators lead the catalog, with everyday calculator, developer, and text utilities available when you need quick browser-local helpers.

Finance math you can audit

Run mortgage, loan, amortization, compound interest, savings goal, and discount-vs-installment calculations to compare monthly payments, lifetime interest, savings requirements, and payment timing. Each finance calculator surfaces its formula, a worked example, and the premises baked into the result so the number you see is something you can audit, not a black box.

The goal is not to make a financial decision for you. The goal is to make the math inspectable enough that you can test scenarios, spot the inputs that matter, and take better questions to a lender, account provider, merchant, or licensed professional.

How Cleartali calculations work

Every tool runs locally in your browser. There is no account, no upload step, and no server-side processing of your inputs. Each calculator uses a documented formula visible inside the tool page, and each developer or text utility describes the parsing rules it applies so the result is repeatable.

Finance results are estimates intended for planning and side-by-side comparison. They are not personalized financial, legal, tax, or investment advice, and they do not replace a lender quote, account statement, or licensed professional. Treat each result as a starting point for a real conversation with the relevant institution.

Also useful browser-local tools

Below the finance calculators, Cleartali also includes general calculators for percentage math, exact age, and date-to-date gaps. The developer and text categories cover quick, repeatable transformations such as cleaning up JSON, encoding a query parameter, or counting words in a draft.

Each tool page includes a brief jargon panel, a worked example using realistic values, and a list of the premises and limitations behind the calculation. If you are new to a term such as PMI, APR, or compound frequency, expand the key-terms panel on the tool page before reading the result.