100 Business Facts and Benchmarks Worth Knowing

These figures are estimation anchors, not numbers to memorize with false precision. Use them to establish orders of magnitude, test assumptions, and sanity-check case calculations. Population and wage figures change over time, so round aggressively unless the case provides exact data.

Time and Scale

1. One minute: 60 seconds.
2. One hour: 60 minutes.
3. One day: 24 hours.
4. One week: 7 days.
5. One year: approximately 52 weeks.
6. One year: 365 days in a normal year.
7. One quarter: 3 months.
8. Working year: roughly 250 weekdays before adjusting for holidays and leave.
9. Full-time work year: 40 hours × 52 weeks = 2,080 hours.
10. Large numbers: 1 billion = 1,000 million.

Population and Households

For current demographic anchors, the UN places the global population between 8.2 billion in 2024 and 8.5 billion in 2030, while the U.S. Census Bureau estimated the U.S. population at approximately 343 million in September 2026.

1. World population: approximately 8.3 billion people.
2. United States: approximately 343 million people.
3. India: approximately 1.43 billion people.
4. China: approximately 1.41 billion people.
5. Indonesia: approximately 286 million people.
6. Pakistan: approximately 262 million people.
7. Nigeria: approximately 250 million people.
8. Brazil: approximately 223 million people.
9. 1% of the world: roughly 83 million people.
10. 1% of the U.S.: roughly 3.4 million people.
11. Average U.S. household: approximately 2.5 people.
12. U.S. households: roughly 130 million.
13. Household estimate: Population ÷ 2.5 is a useful U.S.-style shortcut.
14. 10 million people: roughly 4 million households at 2.5 people each.
15. 100 million people: roughly 40 million households at 2.5 people each.

Labor and Wages

For context, U.S. full-time wage and salary workers had median weekly earnings of $1,251 in Q2 2026. The federal minimum wage remained $7.25 per hour, although many states require higher rates.

1. Standard workweek benchmark: 40 hours.
2. Standard workday benchmark: 8 hours.
3. $10 per hour: approximately $20,800 annually at 2,080 hours.
4. $20 per hour: approximately $41,600 annually.
5. $25 per hour: approximately $52,000 annually.
6. $50 per hour: approximately $104,000 annually.
7. $100 per hour: approximately $208,000 annually.
8. $1,000 per week: approximately $52,000 annually.
9. U.S. median full-time weekly earnings: approximately $1,250 in mid-2026.
10. $1,250 per week: approximately $65,000 annualized.
11. Federal minimum wage: $7.25 per hour for covered U.S. workers.
12. Time-and-a-half: 1.5 × the regular hourly rate.

Revenue, Costs, and Margins

1. Revenue: Price × Volume.
2. $1 × 1 million units: $1 million revenue.
3. $10 × 1 million units: $10 million revenue.
4. $100 × 1 million units: $100 million revenue.
5. 1% of $1 billion: $10 million.
6. 5% of $1 billion: $50 million.
7. 10% of $1 billion: $100 million.
8. One margin point on $1 billion revenue: $10 million.
9. Five margin points on $1 billion: $50 million.
10. 10% margin on $500 million: $50 million profit.
11. 20% margin on $500 million: $100 million profit.
12. 30% cost ratio: leaves 70% before other costs, if applicable.
13. Contribution margin: Price − Variable Cost per Unit.
14. Doubling volume: doubles contribution if unit economics remain unchanged.
15. 10% price increase: increases revenue 10% if volume stays constant.
16. 10% price increase plus 10% volume decline: revenue falls about 1%.
17. Fixed costs: do not change directly with short-term volume.
18. Variable costs: generally increase with activity or volume.
19. Breakeven volume: Fixed Costs ÷ Contribution Margin per Unit.

Growth, Pricing, Market Share, and Customers

1. Rule of 72: 72 ÷ growth rate approximates years to double.
2. 10% annual growth: roughly doubles a business in seven years.
3. 5% annual growth: roughly doubles it in fourteen years.
4. 20% annual growth: roughly doubles it in four years.
5. 10% growth for three years: produces about 33% cumulative growth.
6. 20% growth for three years: produces about 73% cumulative growth.
7. 50% decline: requires a 100% increase to recover.
8. 20% decline: requires a 25% increase to recover.
9. 10% decline: requires approximately an 11.1% increase to recover.
10. 2× the original value: represents a 100% increase.
11. 3× the original value: represents a 200% increase.
12. 10% share of a $5 billion market: $500 million revenue.
13. One share point in a $10 billion market: $100 million.
14. Customer retention: 1 − Churn Rate.
15. 5% churn on 1 million customers: 50,000 customers lost.
16. 80% retention of 1 million customers: 800,000 retained.
17. 10% conversion of 1 million prospects: 100,000 customers.
18. 100,000 customers spending $100 annually: $10 million revenue.
19. 1 million subscribers paying $20 monthly: $240 million annual revenue.
20. Customer acquisition cost: Acquisition Spending ÷ New Customers Acquired.

Operations and Capacity

1. Utilization: Actual Output ÷ Maximum Capacity.
2. 80,000 units from 100,000 capacity: 80% utilization.
3. 100 machines × 100 units daily: 10,000 units per day.
4. 10,000 units × 250 working days: 2.5 million annual units.
5. 95% yield on 1 million units: 950,000 good units.
6. 5% defect rate on 1 million units: 50,000 defective units.
7. Bottleneck: The constrained step limits total system throughput.
8. Productivity: Output ÷ Input.
9. Capacity increase: only creates value if sufficient demand exists.
10. 30 inventory days: roughly one month of annual usage.
11. 60 inventory days: roughly two months of annual usage.
12. 12 inventory turns annually: approximately 30 days of inventory.
13. Six inventory turns annually: approximately 60 days of inventory.

Market-Sizing Shortcuts

1. $1 per person per day: $365 per person annually.
2. $1 per person per month: $12 annually.
3. 1 million people spending $1 daily: approximately $365 million annually.
4. 10 million people spending $100 annually: $1 billion market.
5. 100 million people spending $10 annually: $1 billion market.
6. 1 billion people spending $1 annually: $1 billion market.
7. 1% penetration of 100 million people: 1 million customers.
8. 5% penetration of 100 million: 5 million customers.
9. 10% penetration of 100 million: 10 million customers.
10. 2 million transactions × $50: $100 million transaction value.
11. 20% take rate on $100 million GMV: $20 million revenue.
12. Sanity-check rule: Estimate the expected order of magnitude before trusting the exact calculation.

Final principle: These benchmarks are most useful as anchors, not answers. In an interview, prefer case-specific data whenever it is available. When it is not, use reasonable round assumptions, state them explicitly, and check whether your final result makes sense at the correct order of magnitude.