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Online Calculators
Free percentage, GST, date, age and compound-interest calculators that run locally. Choose from 24 utilities in this category and open the tool that matches your task.
Browse online calculators
Unix Timestamp Converter
Convert Unix timestamps to readable local and UTC dates.
Percentage Calculator
Calculate a percentage of any number.
Percentage Change Calculator
Calculate percentage increase or decrease between two values.
Discount Calculator
Calculate sale price and savings from a discount.
Profit Margin Calculator
Calculate gross profit and margin from revenue and cost.
GST Calculator
Add or extract GST from an amount using any rate.
Age Calculator
Calculate age from a date of birth to any target date.
Date Difference Calculator
Calculate the number of days and weeks between two dates.
Compound Interest Calculator
Estimate investment growth with compound interest.
VAT Calculator
Add or extract VAT at a custom percentage rate.
Markup Calculator
Calculate selling price and gross margin from cost and markup percentage.
Break-even Calculator
Calculate break-even units and revenue from fixed cost, price and variable cost.
ROAS Calculator
Calculate return on ad spend from advertising cost and attributed revenue.
CPC Calculator
Calculate average cost per click from spend and clicks.
CPM Calculator
Calculate cost per thousand impressions from spend and impressions.
CTR Calculator
Calculate click-through rate from clicks and impressions.
Conversion Rate Calculator
Calculate conversion rate from conversions and visits, clicks or leads.
Loan EMI Calculator
Estimate monthly loan payments from principal, annual rate and term.
SIP Calculator
Estimate the future value of regular monthly investments at an assumed return.
CAGR Calculator
Calculate compound annual growth rate from beginning value, ending value and years.
Simple Interest Calculator
Calculate simple interest from principal, annual rate and time.
ROI Calculator
Calculate return on investment from gain/value received and total cost.
Customer Acquisition Cost Calculator
Calculate CAC from acquisition spend and new customers.
Lead Conversion Calculator
Calculate lead-to-customer conversion rate and cost per converted customer.
Practical calculators for everyday numbers and dates
Kaazo Calculators provides focused pages for percentage calculations, percentage change, discounts, profit margin, GST, age, date differences, Unix timestamps and compound interest. Each calculator exposes the inputs needed for one task and returns the result immediately in the browser.
These calculators are useful for planning, checking arithmetic and exploring scenarios, but outputs depend entirely on the values entered and the formula used. Financial results are estimates and should not be treated as accounting, tax, investment or other professional advice.
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Why Kaazo uses task-specific tool pages
Each utility has a descriptive permanent URL, a single primary purpose, step-by-step instructions, relevant FAQs and links to closely related tools. This structure makes the collection easier for people to navigate and gives search engines clearer context about the purpose of each page without relying on one generic converter URL.