Benchmarks running every hour
.NET Mapper
Benchmarks
Real-time performance comparison of popular .NET object mapping libraries. Automated benchmarks with averaged results from the full history of the last 3 months.
Last updated:
Benchmark Results
Average of last 3 months · Mean execution time in microseconds (μs) · Lower is better
Libraries
SimpleFlat
Flat object with primitive properties
NestedObject
Object containing nested child objects
Collection
Object with a collection of 100 items
NameDifference
Source and target have different property names
Mean Execution Time
Microseconds (μs) per operation · lower is better · average of last 3 months
| Library | Version | SimpleFlat (μs) | NestedObject (μs) | Collection (μs) | NameDifference (μs) |
|---|---|---|---|---|---|
| Manual (foreach) | .NET 10.0.10 | 0.02 μs | 0.04 μs | 1.98 μs | 0.01 μs |
| Manual (LINQ) | .NET 10.0.10 | 0.02 μs | 0.04 μs | 2.16 μs | 0.01 μs |
| AutoMapper | 16.2.0 | 0.08 μs | 0.17 μs | 2.62 μs | 0.07 μs |
| Mapster | 10.1.0-pre02 | 0.03 μs | 0.06 μs | 2.13 μs | 0.03 μs |
| TinyMapper | 3.0.2-beta | 0.03 μs | 0.05 μs | 2.79 μs | 0.02 μs |
| AgileMapper | 1.8.1 | 0.47 μs | 0.48 μs | 2.83 μs | 0.46 μs |
| Mapperly | 5.0.0-next.10 | 0.02 μs | 0.04 μs | 2.2 μs | 0.01 μs |
Memory Allocation
Bytes allocated per operation
| Library | Version | SimpleFlat | NestedObject | Collection | NameDifference |
|---|---|---|---|---|---|
| Manual (foreach) | .NET 10.0.10 | 88 B | 216 B | 9,656 B | 56 B |
| Manual (LINQ) | .NET 10.0.10 | 88 B | 216 B | 9,728 B | 56 B |
| AutoMapper | 16.2.0 | 88 B | 216 B | 10,992 B | 56 B |
| Mapster | 10.1.0-pre02 | 88 B | 216 B | 9,656 B | 56 B |
| TinyMapper | 3.0.2-beta | 88 B | 112 B | 9,656 B | 56 B |
| AgileMapper | 1.8.1 | 352 B | 376 B | 9,920 B | 320 B |
| Mapperly | 5.0.0-next.10 | 88 B | 216 B | 9,656 B | 56 B |
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How It Works
A transparent and reproducible benchmarking pipeline for .NET object mappers
Automated Execution
BenchmarkDotNet benchmarks run automatically every hour on a dedicated VPS.
Averaged Results
Results shown are the average of the full history of the last 3 months, reducing noise and outliers.
Auto-Updated Libraries
Library versions are updated automatically so benchmarks always reflect the latest releases.
Multiple Scenarios
Each library is tested across flat mapping, nested objects, collections, and name differences.