OSRS Construction Calculator
Training Construction in Old School RuneScape (OSRS) is one of the fastest but most expensive skills in the game. Whether you’re rushing to level 83 for a fully upgraded Player-Owned House or aiming for level 99, knowing exactly how much GP, time, and materials you need is crucial.
The OSRS Construction Calculator is designed to help players plan their Construction training efficiently. By selecting your current level, target level, training method, and plank cost, you can instantly calculate XP needed, required actions, materials, total cost, butler fees, and estimated training time.
What Is the OSRS Construction Calculator?
The OSRS Construction Calculator is a planning tool that estimates everything required to train Construction between two levels using popular in-game training methods.
It calculates:
- XP needed to reach your target level
- Number of actions required
- Total planks or materials needed
- Material cost based on current plank prices
- Butler costs (optional)
- Total GP cost
- Estimated training time in hours
This tool is ideal for players who want to optimize GP spending and time efficiency while training Construction.
Why Construction Planning Is Important in OSRS
Construction is unique compared to many other skills:
- It has extremely fast XP rates
- It requires large GP investment
- Training methods vary by level
- Butler usage significantly affects cost and speed
Without proper planning, players often overspend millions of GP or choose inefficient methods. The OSRS Construction Calculator removes the guesswork and lets you compare costs before committing.
Training Methods Supported by the Calculator
The calculator includes several popular and efficient Construction training methods, each unlocked at specific levels.
Crude Wooden Chairs (Levels 1–19)
- Beginner-friendly training method
- Low XP per action
- Minimal plank usage
- Suitable for early levels
Oak Chairs (Levels 19–33)
- Slightly higher XP than crude chairs
- Uses oak planks
- Cost-effective early method
Oak Larders (Levels 33–52)
- One of the most popular mid-level methods
- High XP per action
- Excellent balance between cost and speed
Mahogany Tables (Levels 52–74)
- High XP rates
- Expensive due to mahogany planks
- Ideal for fast leveling
Oak Dungeon Doors (Levels 74–99)
- Strong XP rates
- Uses oak planks
- Often chosen for 99 Construction
Mahogany Benches (Levels 77–99)
- Highest XP per action
- Extremely fast but expensive
- Best for players prioritizing speed over cost
How to Use the OSRS Construction Calculator
Using the calculator is quick and straightforward.
Step 1: Enter Current Construction Level
Input your existing Construction level (1–99).
Step 2: Enter Target Construction Level
Choose the level you want to reach. The calculator automatically determines the XP gap.
Step 3: Select Training Method
Pick the training method you plan to use. Each method has different XP rates, plank requirements, and time per action.
Step 4: Enter Cost Per Plank
Input the current Grand Exchange price or your personal cost per plank.
Step 5: Choose Butler Option
Enable or disable the butler option:
- Butler speeds up training
- Adds a fixed GP cost per trip
Step 6: Calculate Results
Click Calculate to instantly see your Construction training breakdown.
Example OSRS Construction Calculation
Scenario:
- Current Level: 50
- Target Level: 83
- Training Method: Mahogany Tables
- Cost Per Plank: 1,500 GP
- Butler Enabled
Results Include:
- Total XP needed from level 50 to 83
- Number of table builds required
- Total mahogany planks needed
- Material cost in GP
- Butler cost based on trips
- Total GP cost
- Estimated training time in hours
This allows you to prepare your bank, supplies, and schedule before training.
XP Calculation Explained (In-Game Accurate)
The calculator uses OSRS’s official XP formula to determine total experience required between levels. This ensures accurate XP calculations consistent with the game’s mechanics.
XP is calculated cumulatively from level 1 up to your current and target levels, then the difference is used to determine actions needed based on your selected training method.
Understanding Costs in Construction Training
Material Cost
Calculated by multiplying:
- Total planks required × Cost per plank
Butler Cost
When enabled:
- Based on inventory size and number of trips
- Each butler trip costs 5,000 GP
Total Cost
The sum of:
- Material cost
- Butler cost
This breakdown helps you decide whether using a butler is worth the extra GP.
Estimated Training Time
Each training method has a fixed time per action, allowing the calculator to estimate total training duration.
- Faster methods = higher GP cost
- Slower methods = lower GP cost
This lets you balance speed vs affordability depending on your goals.
Who Should Use the OSRS Construction Calculator?
This tool is perfect for:
- Ironman accounts planning plank usage
- Main accounts optimizing GP efficiency
- Players rushing level 83 Construction
- Players aiming for level 99
- Speedrunners and efficiency-focused players
- Budget-conscious skillers
Benefits of Using This Calculator
- Prevents GP waste
- Helps plan bank withdrawals
- Estimates total time commitment
- Compares training methods easily
- Supports efficient house upgrades
- Improves overall skilling strategy
15 Frequently Asked Questions (FAQs)
1. Is this calculator accurate to OSRS mechanics?
Yes, it uses OSRS XP formulas and real training data.
2. Does it support all Construction levels?
Yes, levels 1 through 99 are supported.
3. Can I disable the butler cost?
Yes, simply uncheck the butler option.
4. Does it include mahogany homes?
No, this calculator focuses on traditional POH training methods.
5. Are plank prices fixed?
No, you enter your own plank cost.
6. Does it calculate exact GP cost?
It provides accurate estimates, not guaranteed market prices.
7. Can Ironmen use this calculator?
Yes, especially useful for planning plank usage.
8. Is the estimated time realistic?
It’s based on average action time, not perfect tick efficiency.
9. Can I switch methods mid-training?
This calculator assumes one method per calculation.
10. Does it save my inputs?
No, calculations are done instantly without saving data.
11. Is this tool free to use?
Yes, completely free.
12. Does it include inventory size limits?
Yes, inventory size is factored into butler trips.
13. Can I use it for level 83 planning?
Yes, level 83 is one of the most common use cases.
14. Why is Construction so expensive?
Fast XP rates require large amounts of planks and GP.
15. Should I still double-check in-game?
Yes, always verify prices and methods before training.
Final Thoughts
The OSRS Construction Calculator is an essential planning tool for anyone serious about training Construction efficiently. By showing XP requirements, material needs, total GP cost, butler expenses, and estimated training time, it gives you full control over your skilling strategy.