85+ free calculators — salary and income tax for 9 countries, GST/VAT, EMI, SIP and savings, pricing and margins, inventory, payroll and construction. Sliders, charts and shareable results, no sign-up.
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Every calculator on this page is built to Indian construction standards (IS codes, CPWD DSR, BOCW) and benchmarked against real industry averages — not generic formulas. Results are meant to be checked against a real site before use, but they get you a fast, defensible starting number.
