100+789÷456×123=+Calculator Portal
menu.calculatorsmenu.standardsmenu.toolsmenu.learnmenu.aboutmenu.contact
  1. Home
  2. Standards
  3. International Standards

ISO Standards

3 standards available

ISO 8601: Date and time representation

International standard for date and time representation in data interchange.

ISO • 2019

Soil and Foundation Basics – ISO Geotechnical Principles Explained

Learn how soil properties affect foundations and how geotechnical principles relate to foundation, pile, and concrete calculations.

ISO

ISO 80000: Quantities and units

International standard defining physical quantities, their units, and mathematical relationships.

ISO • 2019

First-Calc

Free calculators for better planning.

Free calculators and tools for estimation, planning, and self-reflection.

Share this page

Calculators

  • Math
  • Finance
  • Construction
  • Health
  • Life
  • Compatibility

Knowledge

  • Learn
  • Standards
  • About

Tools

  • All Calculators
  • Popular Calculators
  • Tools Hub

Contact & Feedback

Have suggestions or found an issue? Contact us.

Contact form coming soon.

© 2025 First-Calc

Privacy PolicyTerms of UseDisclaimer