Client Age Calculator
Calculate age from date of birth in years, months, and days. Free age calculator for patients, pets, and clients.
Results
Get more tools like this
Free tips for running your service business better. No spam, unsubscribe anytime.
Take it further
Store client and patient records with age-based alerts in Tregovia
14-day free trial · No credit card required · All modules included
Frequently asked questions
How do I calculate age from date of birth?
Subtract the birth date from today's date. Our calculator shows exact age in years, months, and days.
Can I calculate a pet's age?
Yes — enter the pet's birth date to calculate their age. You can also see their age in 'human years' using common conversion formulas.
How do I calculate age at a future date?
Enter a future reference date to see what age a client or patient will be — useful for vaccine schedules, age-based screenings, and recalls.
Related free tools
Action Planner
Plan tasks, deadlines, and priorities for your service business. Free action plan and task planner tool.
Net Promoter Score (NPS) Calculator
Calculate your Net Promoter Score from survey responses. Free NPS calculator with benchmarks for service businesses.
Customer Acquisition Cost (CAC) Calculator
Calculate customer acquisition cost, LTV:CAC ratio, and payback period. Free CAC calculator for service businesses.
Sales Forecast Calculator
Forecast revenue from your sales pipeline using leads, win rate, and deal size. Free sales forecast calculator for service businesses.
Related guides
Guide
What Is Practice Management Software?
What a PMS covers and how to evaluate fit.
Guide
Flat Pricing vs Per-User Clinic Software
True cost of flat-rate vs per-user pricing.
Guide
GDPR Clinic CRM Checklist
A practical GDPR checklist for choosing clinic software.
Guide
Clinic CRM Hidden Fees Checklist
Spot hidden fees before you sign.